The structure indicated is the infraspinous fossa
of the scapula.
It is called the infraspinous fossa because it lies below (infra) the spine of the scapula
(-spinous). Accordingly, the fossa that lies superior to the spine of the scapula is the supraspinous fossa.
The scapula consists of two surfaces
– the costal surface
and the posterior surface
. The infraspinous fossa is significantly larger than the supraspinous fossa and comprises the majority of the posterior surface of the scapula.
muscle, one of the rotator cuff muscles
, originates in the infraspinous fossa.
Learn all about the anatomy of the rotator cuff muscles
and the features of the scapula